package server;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import lombok.extern.slf4j.Slf4j;
import protocol.MessageCodecSharable;
import protocol.ProcotolFrameDecoder;
import server.handler.RpcRequestMessageHandler;

@Slf4j
public class RpcServer {
  public static void main(String[] args) {
    NioEventLoopGroup boss = new NioEventLoopGroup();
    NioEventLoopGroup worker = new NioEventLoopGroup();
    LoggingHandler LOGGING_HANDLER = new LoggingHandler(LogLevel.DEBUG);
    MessageCodecSharable MESSAGE_CODEC = new MessageCodecSharable();

    // rpc 请求消息处理器，待实现
    RpcRequestMessageHandler RPC_HANDLER = new RpcRequestMessageHandler();
    try {
      ServerBootstrap serverBootstrap = new ServerBootstrap();
      serverBootstrap.channel(NioServerSocketChannel.class);
      serverBootstrap.group(boss, worker);
      serverBootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
        @Override
        protected void initChannel(SocketChannel ch) throws Exception {
          ch.pipeline().addLast(new ProcotolFrameDecoder());
          ch.pipeline().addLast(LOGGING_HANDLER);
          ch.pipeline().addLast(MESSAGE_CODEC);
          ch.pipeline().addLast(RPC_HANDLER);
        }
      });
      Channel channel = serverBootstrap.bind(8080).sync().channel();
      channel.closeFuture().sync();
    } catch (InterruptedException e) {
      log.error("server error", e);
    } finally {
      boss.shutdownGracefully();
      worker.shutdownGracefully();
    }
  }
}
